FuelCell Energy is a clean energy technology company and stationary fuel cell manufacturer with over two decades of experience in the fuel cell industry. Founded in 1969 and headquartered in Danbury, Connecticut, the company designs, builds, and services molten carbonate fuel cell systems that generate electricity through an electrochemical reaction rather than combustion, delivering ultra‑low emissions and high efficiency. The technology is fuel‑flexible, operating on natural gas, biogas, hydrogen, or blended fuels, and provides baseload power, carbon capture, and thermal energy for heating, cooling, or industrial processes. FuelCell Energy targets utilities, independent power producers, data centers, wastewater treatment plants, commercial and hospitality venues, and microgrids, marketing its systems primarily in North America, Europe, and select Asian markets such as South Korea and Singapore. It has demonstrated utility‑scale projects of 10 MW, 20 MW, and 58.8 MW with average run times exceeding ten years.
FuelCell Energy generates revenue from four primary sources: product sales of fuel cell modules, long‑term service agreements for operation and maintenance, electricity generation under power purchase agreements, and research‑and‑development contracts under its Advanced Technologies program. Product revenue comes from the sale, delivery, and commissioning of modules to customers such as Gyeonggi Green Energy Co., Ltd. and CGN‑Yulchon Generation Co., Ltd. in South Korea. Service agreement income is earned through ongoing maintenance and monitoring under contracts like the LTSA with Gyeonggi Green Energy Co., Ltd. Generation revenue derives from electricity sold under long‑term PPAs with utilities including Southern California Edison, Connecticut Light and Power, and the New York Power Authority. Advanced Technologies contract revenue consists of funds from government agencies and private partners for joint development of next‑generation technologies such as solid oxide electrolysis for hydrogen production and carbonate fuel cell improvements.
The company operates through the following segments:
- Product: This segment designs, manufactures, and sells molten carbonate fuel cell modules, including delivery and commissioning for projects such as Gyeonggi Green Energy and CGN‑Yulchon Generation in South Korea.
- Service: This segment provides long‑term operation, maintenance, and monitoring services for installed fuel cell plants under agreements like the LTSA with Gyeonggi Green Energy Co., Ltd., ensuring plant availability.
- Generation: This segment owns and operates fuel cell power plants that sell electricity to utilities and off‑takers under power purchase agreements, with projects in Bridgeport, Connecticut; Long Island, New York; and California sites such as Tulare BioMAT and San Bernardino.
- Advanced Technologies: This segment conducts research and development funded by government and private partners, focusing on solid oxide electrolysis for hydrogen, carbonate fuel cell efficiency gains, and carbon capture technologies.
FuelCell Energy holds a distinct position in the stationary fuel cell market by offering carbonate‑based systems that combine fuel flexibility, continuous baseload output, and integrated carbon capture. These features differentiate it from competitors relying on combustion‑based generation or pure hydrogen fuel cells, enabling it to serve utilities, industrial users, and municipalities seeking low‑emission, reliable power. Its long operating history and proven multi‑megawatt installations provide a competitive edge in markets that value energy resilience and decarbonization.
FuelCell Energy serves utilities, independent power producers, industrial firms, municipalities, and educational institutions. Key customers include Gyeonggi Green Energy Co., Ltd., CGN‑Yulchon Generation Co., Ltd., Southern California Edison, Connecticut Light and Power (Eversource), the New York Power Authority, Pfizer Inc., the City of San Bernardino, the University of Connecticut, and facilities such as the Riverside Regional Water Quality Control Plant and Tulare BioMAT.